53305144040 has 32 divisors (see below), whose sum is σ = 120105801000. Its totient is φ = 21291972864.

The previous prime is 53305144027. The next prime is 53305144111. The reversal of 53305144040 is 4044150335.

It can be written as a sum of positive squares in 4 ways, for example, as 31942983076 + 21362160964 = 178726^2 + 146158^2 .

It is a super-2 number, since 2×53305144040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53305143994 and 53305144012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911435 + ... + 968154.

Almost surely, 2^53305144040 is an apocalyptic number.

It is an amenable number.

53305144040 is an abundant number, since it is smaller than the sum of its proper divisors (66800656960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53305144040 is a wasteful number, since it uses less digits than its factorization.

53305144040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880309 (or 1880305 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 53305144040 its reverse (4044150335), we get a palindrome (57349294375).

The spelling of 53305144040 in words is "fifty-three billion, three hundred five million, one hundred forty-four thousand, forty".